> Van: Andreas Dante > Aan: PICLIST@MITVMA.MIT.EDU > Onderwerp: Re: I2C > Datum: donderdag 11 juni 1998 22:51 > > On Thu, 11 Jun 1998, Peter Schultz wrote: > > The I2C bus supply mulitple devices, correct ? > In general right. Some serial EEPROMS have restricted address capability. > Hence it is allowed to have only one of them per I2C bus. This is not a restriction in the EEPROM itself, but by way of adressing-space. All Memory-devices should have an Device adres address of 1010AAA? Binary. (AAA == Device sub-address. can be set on pins 1, 2 & 3. ? is the Read/Write bit) Regard a 2048-byte RAM/EEPROM as eight seperate devices thrown together, and it'll make more sense (you _address_ them as eight devices, from A0 thru AE (disregarding the Read/write bit) ). Add to this the secondary address-byte and there you have your memory-limit. (Extended adressing modi devices have a special base-address) [Cut] Greetz, Rudy Wieser